[
	{ 
	  id:'hufupin8',
	  text: "文件格式",
	  leaf:false,
	  children:[
	  	{
			id:'salse',
			text:'外语系知识积累',
			leaf:true
		}
	  ]
	},{ 
	  id:'hufupin3',
	  text: "图片",
	  leaf:true
	},{ 
	  id:'hufupin2',
	  text: "讲稿",
	  leaf:true
	},{ 
	  id:'hufupin1',
	  text: "综合知识",
	  leaf:true
	}
	
]
